5 papers
High and ultra-high energy cosmic ray acceleration in structure-formation shocks in Abell 3376 galaxy cluster
J. Bagchi, Florence Durret, Gastao B. Lima Neto +2
We describe multiwavelength optical, X-ray and radio evidences of energetic mergers in southern galaxy cluster Abell 3376 (A3376, redshift z=0.046, X-ray luminosity $ \rm L_{X}(0.1…
XMM-Newton and Chandra view of the Cluster Abell 85 and its X-Ray Filament
Gastao B. Lima Neto, Florence Durret
From ROSAT data, the bright X-ray cluster Abell 85 was found to show a roughly symmetrical shape, on to which are superimposed several features, among which: (1) a blob or group of…
Gravo-thermal properties and formation of elliptical galaxies
I. Marquez, G. B. Lima Neto, H. Capelato +2
We have analyzed a sample of galaxies belonging to three clusters: Coma, Abell 85, and Abell 496 (real galaxies) and a sample of simulated elliptical galaxies formed in a hierarchi…
The rich cluster of galaxies ABCG 85. II. X-ray analysis using the ROSAT HRI
G. B. Lima Neto, V. Pislar, F. Durret +2
We present a new X-ray analysis mainly based on ROSAT HRI data. The HRI spatial resolution combined with an improved wavelet analysis method and with complementary radio and optica…
Evolution and dynamics of poor clusters of galaxies
Gastao B. Lima Neto, Frank W. Baier
We have performed N-body simulations of poor clusters with enough particles to resolve the individual galaxies. The main cases of initial conditions are: (i) 50 equal mass galaxies…